In his first-ever interview, the sole Australian survivor of the Waco siege has revealed to 60 Minutes what really took place during the 51-day stand-off, and why he believes crazed cult leader David Koresh will one day return to Earth as the son of God.

Trump noticeably mispronounced "states," when concluding an address to the nation on his decision to recognise Jerusalem as the capital of Israel.

The moment was quickly shared online, and prompted speculation about the 71-year-old president's health.

Sanders also said Trump will undergo the customary presidential physical in early 2018 at Walter Reed National Military Medical Center, adding, "Those records will be released by the doctor following that taking place."

At age 70, Trump was the oldest president elected to his first term. During his nearly one year as president, Trump, now 71, has not publicly released any medical records.

In September 2016, during the general election campaign, Trump released a doctor's note that included some medical information. Trump also discussed his health during a taping of "The Dr. Oz Show," a television talk show.

Asked last week whether Trump would get an annual physical and report his health information to the public, as his predecessors have, Sanders said she did not know.